Heads Up critique

[reecelights]

The guy I'm playing had a huge lead earlier, around 5200 to my 1600 with 4 players left. I've managed to get it away from him because he is playing extremely loose, seeing about 60% of the flops. I'm fairly certain I can classify him as a calling station. Now that we're heads up he is limping in or calling any raise whether he is BB or I am. Therefore it's impossible to get a read on him. This hand was the turning point and the beginning of the end of my probably victory. Two hands ago I went up 6300 to 1700 and the following hand he raised for the first time heads up.
This hand is the second striaght preflop raise, and I'm suspecting he's desperate.

Seat 4 is the button
Total number of players : 2
Seat 1: reecelights (5511)
Seat 4: Thorpe45 (2489)
Thorpe45 posts small blind (200)
reecelights posts big blind (400)
** Dealing down cards **
Dealt to reecelights [ 8d, Tc ]
Thorpe45 calls (200)
reecelights checks.
** Dealing Flop ** : [ 3h, Ac, Th ]
reecelights bets (800)
Thorpe45 raises (1600) to 1600
reecelights calls (800)
** Dealing Turn ** : [ 4s ]
reecelights bets (500)
Thorpe45 calls (489)
Thorpe45 is all-In.
** Dealing River ** : [ 2s ]

[LokiV]

A person who never raises preflop does it twice in a row. Implying either he is desperate or more likely, he has picked up a decent/good hand. An ace hits, he raises your bet. You hold middle pair against a described calling station RAISING.

Your probable victory? Yeah.. sure. So how was 2nd place?

[chill888]

yep reads like a bad beat post.

Of course you call - not feeling great but definitely hopeful. Not really an interesting situation.